-/*
- * This file is part of SIS.
- *
- * SIS, SPARC instruction simulator V1.6 Copyright (C) 1995 Jiri Gaisler,
- * European Space Agency
- *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 675
- * Mass Ave, Cambridge, MA 02139, USA.
- *
- */
+/* This file is part of SIS (SPARC instruction simulator)
+ Copyright (C) 1995-2020 Free Software Foundation, Inc.
+ Contributed by Jiri Gaisler, European Space Agency
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "config.h"
#include <signal.h>
#include <string.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <sys/fcntl.h>
#include "sis.h"
+#include "libiberty.h"
#include "bfd.h"
#include <dis-asm.h>
+#include "sim-config.h"
-#ifndef fprintf
-extern fprintf();
-#endif
-
-#define VAL(x) strtol(x,(char *)NULL,0)
+#include "gdb/remote-sim.h"
+#include "gdb/signals.h"
-extern char **buildargv(char *input);
+#define PSR_CWP 0x7
extern struct disassemble_info dinfo;
extern struct pstate sregs;
extern int ctrl_c;
extern int nfp;
+extern int ift;
+extern int rom8;
+extern int wrp;
+extern int uben;
extern int sis_verbose;
extern char *sis_version;
extern struct estate ebase;
extern struct evcell evbuf[];
extern struct irqcell irqarr[];
extern int irqpend, ext_irl;
-extern char uart_dev1[], uart_dev2[];
+extern int sparclite;
+extern int dumbio;
+extern int sparclite_board;
+extern int termsave;
+extern char uart_dev1[], uart_dev2[];
int sis_gdb_break = 1;
-#ifdef IUREV0
-extern int iurev0;
-#endif
+host_callback *sim_callback;
-#ifdef MECREV0
-extern int mecrev0;
-#endif
-
-run_sim(sregs, go, icount, dis)
+int
+run_sim(sregs, icount, dis)
struct pstate *sregs;
- int go;
- unsigned int icount;
+ uint64 icount;
int dis;
{
- int mexc, ws;
+ int mexc, irq;
if (sis_verbose)
- printf_filtered("resuming at %x\n", sregs->pc);
- sregs->starttime = time(NULL);
- while ((!sregs->err_mode & (go || (icount > 0))) &&
- ((sregs->bptnum == 0) || !(sregs->bphit = check_bpt(sregs)))) {
+ (*sim_callback->printf_filtered) (sim_callback, "resuming at %x\n",
+ sregs->pc);
+ init_stdio();
+ sregs->starttime = get_time();
+ irq = 0;
+ if ((sregs->pc != 0) && (ebase.simtime == 0))
+ boot_init();
+ while (!sregs->err_mode & (icount > 0)) {
sregs->fhold = 0;
sregs->hold = 0;
- sregs->icnt = 0;
-
- check_interrupts(sregs);
- if (sregs->trap) {
- sregs->err_mode = execute_trap(sregs);
- } else {
- if (sregs->psr & 0x080)
- sregs->asi = 8;
- else
- sregs->asi = 9;
-#ifdef IUREV0
- if (iurev0 && sregs->rett_err) {
- sregs->asi &= ~0x1;
- sregs->asi |= ((sregs->psr & 0x040) >> 6);
- }
-#endif
+ sregs->icnt = 1;
- mexc = memory_read(sregs->asi, sregs->pc, &sregs->inst, &sregs->hold);
- if (sregs->annul) {
- sregs->annul = 0;
- sregs->icnt = 1;
- sregs->pc = sregs->npc;
- sregs->npc = sregs->npc + 4;
- } else {
+ if (sregs->psr & 0x080)
+ sregs->asi = 8;
+ else
+ sregs->asi = 9;
+
+#if 0 /* DELETE ME! for debugging purposes only */
+ if (sis_verbose > 1)
+ if (sregs->pc == 0 || sregs->npc == 0)
+ printf ("bogus pc or npc\n");
+#endif
+ mexc = memory_iread (sregs->pc, &sregs->inst, &sregs->hold);
+#if 0 /* DELETE ME! for debugging purposes only */
+ if (sis_verbose > 2)
+ printf("pc %x, np %x, sp %x, fp %x, wm %x, cw %x, i %08x\n",
+ sregs->pc, sregs->npc,
+ sregs->r[(((sregs->psr & 7) << 4) + 14) & 0x7f],
+ sregs->r[(((sregs->psr & 7) << 4) + 30) & 0x7f],
+ sregs->wim,
+ sregs->psr & 7,
+ sregs->inst);
+#endif
+ if (sregs->annul) {
+ sregs->annul = 0;
+ sregs->icnt = 1;
+ sregs->pc = sregs->npc;
+ sregs->npc = sregs->npc + 4;
+ } else {
+ if (ext_irl) irq = check_interrupts(sregs);
+ if (!irq) {
if (mexc) {
sregs->trap = I_ACC_EXC;
} else {
- if (sregs->histlen) {
- sregs->histbuf[sregs->histind].addr = sregs->pc;
- sregs->histbuf[sregs->histind].time = ebase.simtime;
- sregs->histind++;
- if (sregs->histind >= sregs->histlen)
- sregs->histind = 0;
- }
- if (dis) {
- printf(" %8d ", ebase.simtime);
- dis_mem(sregs->pc, 1, &dinfo);
- }
if ((sis_gdb_break) && (sregs->inst == 0x91d02001)) {
if (sis_verbose)
- printf_filtered("SW BP hit at %x\n", sregs->pc);
- return (BPT_HIT);
+ (*sim_callback->printf_filtered) (sim_callback,
+ "SW BP hit at %x\n", sregs->pc);
+ sim_halt();
+ restore_stdio();
+ clearerr(stdin);
+ return BPT_HIT;
} else
dispatch_instruction(sregs);
}
icount--;
}
if (sregs->trap) {
+ irq = 0;
sregs->err_mode = execute_trap(sregs);
}
}
advance_time(sregs);
if (ctrl_c) {
- go = icount = 0;
+ icount = 0;
}
}
- sregs->tottime += time(NULL) - sregs->starttime;
+ sim_halt();
+ sregs->tottime += get_time() - sregs->starttime;
+ restore_stdio();
+ clearerr(stdin);
if (sregs->err_mode)
error_mode(sregs->pc);
if (sregs->err_mode)
- return (ERROR);
+ return ERROR;
if (sregs->bphit) {
if (sis_verbose)
- printf_filtered("HW BP hit at %x\n", sregs->pc);
- return (BPT_HIT);
+ (*sim_callback->printf_filtered) (sim_callback,
+ "HW BP hit at %x\n", sregs->pc);
+ return BPT_HIT;
}
if (ctrl_c) {
ctrl_c = 0;
- return (CTRL_C);
+ return CTRL_C;
}
- return (TIME_OUT);
+ return TIME_OUT;
}
-
-void
-sim_open(char *args)
+SIM_DESC
+sim_open (kind, callback, abfd, argv)
+ SIM_OPEN_KIND kind;
+ struct host_callback_struct *callback;
+ struct bfd *abfd;
+ char * const *argv;
{
int argc = 0;
- char **argv;
- int cont = 1;
- int stat = 0;
- int grdl = 0;
- int freq = 15;
-
- printf_filtered("\n SIS - SPARC instruction simulator %s\n", sis_version);
- printf_filtered(" Bug-reports to Jiri Gaisler ESA/ESTEC (jgais@wd.estec.esa.nl)\n");
- argv = buildargv(args);
- if (argv != NULL)
- while (argv[argc])
- argc++;
+ int stat = 1;
+ int freq = 0;
+
+ sim_callback = callback;
+
+ argc = countargv (argv);
while (stat < argc) {
if (argv[stat][0] == '-') {
if (strcmp(argv[stat], "-v") == 0) {
- sis_verbose = 1;
- }
-#ifdef IUREV0
- if (strcmp(argv[stat], "-iurev0") == 0) {
- iurev0 = 1;
- printf_filtered(" simulating IU rev.0 jmpl/restore bug\n");
- }
-#endif
-#ifdef MECREV0
- if (strcmp(argv[stat], "-mecrev0") == 0) {
- mecrev0 = 1;
- printf_filtered(" simulating MEC rev.0 timer and uart interrupt bug\n");
- }
-#endif
+ sis_verbose++;
+ } else
if (strcmp(argv[stat], "-nfp") == 0) {
- printf_filtered("no FPU\n");
nfp = 1;
- }
- if (strcmp(argv[stat], "-uart1") == 0) {
- if ((stat + 1) < argc)
- strcpy(uart_dev1, argv[++stat]);
- }
- if (strcmp(argv[stat], "-uart2") == 0) {
- if ((stat + 1) < argc)
- strcpy(uart_dev2, argv[++stat]);
- }
+ } else
+ if (strcmp(argv[stat], "-ift") == 0) {
+ ift = 1;
+ } else
+ if (strcmp(argv[stat], "-sparclite") == 0) {
+ sparclite = 1;
+ } else
+ if (strcmp(argv[stat], "-sparclite-board") == 0) {
+ sparclite_board = 1;
+ } else
+ if (strcmp(argv[stat], "-dumbio") == 0) {
+ dumbio = 1;
+ } else
+ if (strcmp(argv[stat], "-wrp") == 0) {
+ wrp = 1;
+ } else
+ if (strcmp(argv[stat], "-rom8") == 0) {
+ rom8 = 1;
+ } else
+ if (strcmp(argv[stat], "-uben") == 0) {
+ uben = 1;
+ } else
+ if (strcmp(argv[stat], "-uart1") == 0) {
+ if ((stat + 1) < argc)
+ strcpy(uart_dev1, argv[++stat]);
+ } else
+ if (strcmp(argv[stat], "-uart2") == 0) {
+ if ((stat + 1) < argc)
+ strcpy(uart_dev2, argv[++stat]);
+ } else
if (strcmp(argv[stat], "-nogdb") == 0) {
- printf_filtered("disabling GDB trap handling for breakpoints\n");
sis_gdb_break = 0;
- }
- if (strcmp(argv[stat], "-freq") == 0)
+ } else
+ if (strcmp(argv[stat], "-freq") == 0) {
if ((stat + 1) < argc) {
- freq = VAL(argv[++stat]);
- printf_filtered(" ERC32 freq %d Mhz\n", freq);
+ freq = strtol(argv[++stat], (char **)NULL, 0);
}
+ } else
+ if (strncmp(argv[stat], "--sysroot=", sizeof("--sysroot=") - 1) == 0) {
+ /* Ignore until we start to support this. */
+ } else {
+ (*sim_callback->printf_filtered) (sim_callback,
+ "unknown option %s\n",
+ argv[stat]);
+ }
} else
bfd_load(argv[stat]);
stat++;
}
- freeargv(argv);
- sregs.freq = freq;
- INIT_DISASSEMBLE_INFO(dinfo, stdout, fprintf);
- init_signals();
+ if (sis_verbose) {
+ (*sim_callback->printf_filtered) (sim_callback, "\n SIS - SPARC instruction simulator %s\n", sis_version);
+ (*sim_callback->printf_filtered) (sim_callback, " Bug-reports to Jiri Gaisler ESA/ESTEC (jgais@wd.estec.esa.nl)\n");
+ if (nfp)
+ (*sim_callback->printf_filtered) (sim_callback, "no FPU\n");
+ if (sparclite)
+ (*sim_callback->printf_filtered) (sim_callback, "simulating Sparclite\n");
+ if (dumbio)
+ (*sim_callback->printf_filtered) (sim_callback, "dumb IO (no input, dumb output)\n");
+ if (sis_gdb_break == 0)
+ (*sim_callback->printf_filtered) (sim_callback, "disabling GDB trap handling for breakpoints\n");
+ if (freq)
+ (*sim_callback->printf_filtered) (sim_callback, " ERC32 freq %d Mhz\n", freq);
+ }
+
+ sregs.freq = freq ? freq : 15;
+ termsave = fcntl(0, F_GETFL, 0);
+ INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
+ dinfo.endian = BFD_ENDIAN_BIG;
+#endif
reset_all();
ebase.simtime = 0;
init_sim();
init_bpt(&sregs);
reset_stat(&sregs);
+
+ /* Fudge our descriptor for now. */
+ return (SIM_DESC) 1;
}
void
-sim_close(int quitting)
+sim_close(sd, quitting)
+ SIM_DESC sd;
+ int quitting;
{
exit_sim();
+ fcntl(0, F_SETFL, termsave);
};
-int
-sim_load(char *prog, int from_tty)
+SIM_RC
+sim_load(sd, prog, abfd, from_tty)
+ SIM_DESC sd;
+ const char *prog;
+ bfd *abfd;
+ int from_tty;
{
- bfd_load(*prog);
- return (0);
+ bfd_load (prog);
+ return SIM_RC_OK;
}
-void
-sim_create_inferior(int start_address, char **argv, char **env)
+SIM_RC
+sim_create_inferior(sd, abfd, argv, env)
+ SIM_DESC sd;
+ struct bfd *abfd;
+ char * const *argv;
+ char * const *env;
{
+ bfd_vma start_address = 0;
+ if (abfd != NULL)
+ start_address = bfd_get_start_address (abfd);
+
ebase.simtime = 0;
reset_all();
reset_stat(&sregs);
sregs.pc = start_address & ~3;
sregs.npc = sregs.pc + 4;
-
+ return SIM_RC_OK;
}
-void
-sim_store_register(regno, value)
+int
+sim_store_register(sd, regno, value, length)
+ SIM_DESC sd;
int regno;
unsigned char *value;
+ int length;
{
- /* FIXME: Review the computation of regval. */
- int regval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3];
+ int regval;
+
+ regval = (value[0] << 24) | (value[1] << 16)
+ | (value[2] << 8) | value[3];
set_regi(&sregs, regno, regval);
+ return length;
}
-void
-sim_fetch_register(regno, buf)
+int
+sim_fetch_register(sd, regno, buf, length)
+ SIM_DESC sd;
int regno;
unsigned char *buf;
+ int length;
{
get_regi(&sregs, regno, buf);
+ return -1;
}
int
-sim_write(mem, buf, length)
- int mem;
- unsigned char *buf;
- int length;
+sim_write (SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length)
{
- return (sis_memory_write(mem, buf, length));
+ int i, len;
+
+ for (i = 0; i < length; i++) {
+ sis_memory_write ((mem + i) ^ EBT, &buf[i], 1);
+ }
+ return length;
}
int
-sim_read(int mem, unsigned char *buf, int length)
+sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
{
- return (sis_memory_read(mem, buf, length));
+ int i, len;
+
+ for (i = 0; i < length; i++) {
+ sis_memory_read ((mem + i) ^ EBT, &buf[i], 1);
+ }
+ return length;
}
void
-sim_info(int verbose)
+sim_info(sd, verbose)
+ SIM_DESC sd;
+ int verbose;
{
show_stat(&sregs);
-
-
}
int simstat = OK;
-enum sim_stop {
- sim_exited, sim_stopped, sim_signalled
-};
-
void
-sim_stop_reason(enum sim_stop * reason, int *sigrc)
+sim_stop_reason(sd, reason, sigrc)
+ SIM_DESC sd;
+ enum sim_stop * reason;
+ int *sigrc;
{
switch (simstat) {
case CTRL_C:
*reason = sim_stopped;
- *sigrc = SIGINT;
+ *sigrc = GDB_SIGNAL_INT;
break;
case OK:
case TIME_OUT:
case BPT_HIT:
*reason = sim_stopped;
- *sigrc = SIGTRAP;
+ *sigrc = GDB_SIGNAL_TRAP;
break;
case ERROR:
*sigrc = 0;
simstat = OK;
}
-
-void
-sim_resume(int step, int siggnal)
+/* Flush all register windows out to the stack. Starting after the invalid
+ window, flush all windows up to, and including the current window. This
+ allows GDB to do backtraces and look at local variables for frames that
+ are still in the register windows. Note that strictly speaking, this
+ behavior is *wrong* for several reasons. First, it doesn't use the window
+ overflow handlers. It therefore assumes standard frame layouts and window
+ handling policies. Second, it changes system state behind the back of the
+ target program. I expect this to mainly pose problems when debugging trap
+ handlers.
+*/
+
+static void
+flush_windows ()
{
- simstat = run_sim(&sregs, 1, 0, 0);
+ int invwin;
+ int cwp;
+ int win;
+ int ws;
+
+ /* Keep current window handy */
+
+ cwp = sregs.psr & PSR_CWP;
+
+ /* Calculate the invalid window from the wim. */
+
+ for (invwin = 0; invwin <= PSR_CWP; invwin++)
+ if ((sregs.wim >> invwin) & 1)
+ break;
+
+ /* Start saving with the window after the invalid window. */
+
+ invwin = (invwin - 1) & PSR_CWP;
+
+ for (win = invwin; ; win = (win - 1) & PSR_CWP)
+ {
+ uint32 sp;
+ int i;
+
+ sp = sregs.r[(win * 16 + 14) & 0x7f];
+#if 1
+ if (sis_verbose > 2) {
+ uint32 fp = sregs.r[(win * 16 + 30) & 0x7f];
+ printf("flush_window: win %d, sp %x, fp %x\n", win, sp, fp);
+ }
+#endif
+
+ for (i = 0; i < 16; i++)
+ memory_write (11, sp + 4 * i, &sregs.r[(win * 16 + 16 + i) & 0x7f], 2,
+ &ws);
+
+ if (win == cwp)
+ break;
+ }
}
void
-sim_kill(void)
+sim_resume(SIM_DESC sd, int step, int siggnal)
{
-};
-
+ simstat = run_sim(&sregs, UINT64_MAX, 0);
+ if (sis_gdb_break) flush_windows ();
+}
void
-sim_do_command(cmd)
- char *cmd;
+sim_do_command(sd, cmd)
+ SIM_DESC sd;
+ const char *cmd;
{
exec_cmd(&sregs, cmd);
}
+char **
+sim_complete_command (SIM_DESC sd, const char *text, const char *word)
+{
+ return NULL;
+}
+#if 0 /* FIXME: These shouldn't exist. */
int
sim_insert_breakpoint(int addr)
sregs.bpts[sregs.bptnum] = addr & ~0x3;
sregs.bptnum++;
if (sis_verbose)
- printf_filtered("inserted HW BP at %x\n", addr);
+ (*sim_callback->printf_filtered) (sim_callback, "inserted HW BP at %x\n", addr);
return 0;
} else
return 1;
sregs.bpts[i] = sregs.bpts[i + 1];
sregs.bptnum -= 1;
if (sis_verbose)
- printf_filtered("removed HW BP at %x\n", addr);
+ (*sim_callback->printf_filtered) (sim_callback, "removed HW BP at %x\n", addr);
return 0;
}
return 1;
}
+
+#endif
projects / deliverable / binutils-gdb.git / blobdiff